Buddy of mine picked up the Acer Aspire 5336-2524 couple of months back, while demoing Reason Record software he was prompted that the CPU was not good enough. Turns out some numbskull a walmart pushed a single core celeron off on him. The lappy specs are listed here, Acer Support: Acer Aspire 5336 Notebook Series Specifications this particular setup came with 3GB RAM, 250GB HDD and the celeron 900 CPU. I am interested in tearing it down for him and replacing the CPU if possible. I notice it is the GL40 chipset. After reading around, general consensus seems to be any Penryn-3M 45nm 35w "should" work. Never having tore down a laptop, a few questions popped up: 1.Does anyone know if the CPU is held in by a socket, or is there any chance it will be soldered directly on the mobo? 2. Is a bios restriction likely, that will only allow the celerons to be installed? Is the laptop likely to recognize a cpu other than the 2 listed in specs? I was looking at this cpu, Intel Core 2 Duo 2.0 Ghz T6400 Laptop CPU SLGJ4 | eBay seems a deal at 2x the cores and 2x the cache of the celeron. Any opinions or feedback on methods, technical limitations, or cpu choice is greatly appreciated.